python 在threading中如何处理主进程和子线程的关系

import time
import random
import threading
 
class worker(threading.Thread):
  def __init__(self): 
    threading.Thread.__init__(self) 
  def run(self):
    t = random.randint(1,10)
    time.sleep(t)
    print "This is " + self.getName() + ";I sleep %d second."%(t)
    
tsk = []
for i in xrange(0,5):
  time.sleep(0.1)
  thread = worker()
  thread.start()
  tsk.append(thread)
for tt in tsk:
  tt.join()
print "This is the end of main thread."

# python testjoin.py 
This is Thread-3;I sleep 2 second.
This is Thread-1;I sleep 4 second.
This is Thread-2;I sleep 7 second.
This is Thread-4;I sleep 7 second.
This is Thread-5;I sleep 7 second.
This is the end of main thread.

import time
import random
import threading
 
class worker(threading.Thread):
  def __init__(self): 
    threading.Thread.__init__(self) 
  def run(self):
    t = random.randint(1,10)
    time.sleep(t)
    print "This is " + self.getName() + ";I sleep %d second."%(t)
    
tsk = []
for i in xrange(0,5):
  time.sleep(0.1)
  thread = worker()
  thread.setDaemon(True)
  thread.start()
  tsk.append(thread)
print "This is the end of main thread."

import time
import random
import threading
 
class worker(threading.Thread):
  def __init__(self): 
    threading.Thread.__init__(self) 
  def run(self):
    t = random.randint(1,10)
    time.sleep(t)
    print "This is " + self.getName() + ";I sleep %d second."%(t)
    
tsk = []
for i in xrange(0,5):
  time.sleep(0.1)
  thread = worker()
  thread.start()
  tsk.append(thread)
print "This is the end of main thread."

# python testthread.py 
This is the end of main thread.
This is Thread-4;I sleep 1 second.
This is Thread-3;I sleep 7 second.
This is Thread-5;I sleep 7 second.
This is Thread-1;I sleep 10 second.
This is Thread-2;I sleep 10 second.

# coding=utf-8
import logging
import multiprocessing
import os
import time
from threading import Thread

logging.basicConfig(
  level=logging.INFO,
  format="%(asctime)s 【 %(process)d 】 %(processName)s %(message)s"
)


def func (i):
  # logging.info(f'子：{os.getpid()},\t{i}')
  return f'子：{os.getpid()},\t{i}'


def main (ctx):
  start01 = time.time()
  ts = [Thread(target=func, args=(i,)) for i in range(100)]
  [t.start() for t in ts]
  [t.join() for t in ts]
  end01 = time.time() - start01
  logging.info(f"线程花费的时间：{end01}秒")
  
  start02 = time.time()
  ps = [ctx.Process(target=func, args=(i,)) for i in range(100)]
  [p.start() for p in ps]
  [p.join() for p in ps]
  end02 = time.time() - start02
  logging.info(f"进程花费的时间：{end02}秒")


if __name__ == '__main__':
  # windows 启动方式
  multiprocessing.set_start_method('spawn')
  # 获取上下文
  ctx = multiprocessing.get_context('spawn')
  # 检查这是否是冻结的可执行文件中的伪分支进程。
  ctx.freeze_support()
  main(ctx)